Research Progress in n-type Organic Semiconducting Materials Based on Amides or Imides

作者：Li, Shanwu; Zhu, Chenyujie; Luo, Yinhao; Zhang, Yaru; Teng, Hanming; Wang, Zongrui; Zhen, Yonggang^*

来源：Acta Chimica Sinica, 2022, 80(12): 1600-1617.

DOI：10.6023/A22080380

• n-type organic semiconductors
• amides
• imides
• molecular design
• organic field-effect transistors

The organic semiconducting materials feature various sources, tailorable chemical structures, low-temperature device fabrication and good compatibility with plastic substrates, largely expanding the functions and applications of electronic devices. However, electron-transporting (n-type) organic semiconductors lag far behind their hole-transporting (p-type) counterpart in terms of molecular diversity, carrier mobility as well as air stability, preventing the development in the ambipolar transistors, p-n junctions and organic complementary circuits. Amidation and imidization of aromatic systems can enhance electron affinity values significantly, thus opening up the possibility to achieve high-performance n-type organic semiconductors. The recent research progress in n-type organic small-molecule and polymeric semiconducting materials including naphthalene diimides, perylene diimides, diketopyrrolopyrroles, isoindigos and other amide/imide derivatives is summarized in this review. From the viewpoint of molecular design, we deeply discuss how the molecular structures alter molecular frontier orbital levels, intermolecular forces, aggregation structures, device stability and electrical characteristics. Finally, we address several key points for further exploration in this field.

• 单位
  北京化工大学; 华中科技大学